/**
 * Copyright 2011-2017 GatlingCorp (http://gatling.io)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.gatling.jms.check

import java.io.StringReader
import javax.jms.{ Message, TextMessage }

import io.gatling.commons.validation._
import io.gatling.core.check._
import io.gatling.core.check.extractor.xpath._
import io.gatling.jms.JmsCheck

import org.xml.sax.InputSource

class JmsXPathProvider(xmlParsers: XmlParsers) extends CheckProtocolProvider[XPathCheckType, JmsCheck, Message, Option[Dom]] {

  override val specializer: Specializer[JmsCheck, Message] = identity

  private val ErrorMapper = "Could not parse response into a DOM Document: " + _

  override val preparer: Preparer[Message, Option[Dom]] =
    message => safely(ErrorMapper) {
      message match {
        case tm: TextMessage => Some(xmlParsers.parse(new InputSource(new StringReader(tm.getText)))).success
        case _               => "Unsupported message type".failure
      }
    }
}
